Battery charging device



FIG. 1 is a top left perspective view of a battery charging device showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a back elevation view thereof; and,

FIG. 8 is a top left perspective view thereof shown in an environment of use.

The broken lines shown in the figures depict portions of the battery charging device that form no part of the claimed design. 

CLAIM The ornamental design for a battery charging device, as shown and described. 